Assignee
LIU QING-GUANG
US·3 granted patents·4 citations·filing 2008–2008
Technology mixH04M3
Top patents by PatentIndex Score
3 records- 0169US8275142B2Acoustic echo cancellation systemLIU QING-GUANG·Filed 2008·Granted Sep 25, 2012·3 cites·15 claims
- 0260US8194850B2Method and apparatus for voice communicationLIU QING-GUANG·Filed 2008·Granted Jun 5, 2012·1 cites·18 claims
- 0348US8204209B2Full duplex hands-free telephone systemLIU QING-GUANG·Filed 2008·Granted Jun 19, 2012·0 cites·12 claims
Join the waitlist — get patent alerts
Get an alert when LIU QING-GUANG files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →